Catalyst for purifying exhaust gas

Details Catalyst for purifying exhaust gas Catalyst for purifying exhaust gas

B - Operations, Transporting

01

J

B01J 29/064 (2006.01) B01D 53/94 (2006.01) B01J 29/06 (2006.01) B01J 29/42 (2006.01)

Patent

CA 2057702

A catalyst for purifying an exhaust gas to remove nitrogen oxides, carbon monoxide and hydrocarbons from an oxygen-rich exhaust gas containing nitrogen oxides, carbon monoxide and hydrocarbons, comprising (i) a zeolite having an SiO2/Al2O3 mole ratio of at least 15 and (ii) (a) cobalt, (b) an alkaline earth metal and (c) silver, or nickel and/or zinc, or platinum and/or manganese, or copper and/or rhodium, incorporated thereinto.

Un catalyseur pour purifier un gaz d'échappement, permettant d'éliminer les oxydes d'azote, le monoxyde de carbone et les hydrocarbures présents dans un gaz d'échappement riche en oxygène, renfermant des oxydes d'azote, du monoxyde de carbone et des hydrocarbures. Le catalyseur renferme : i) une zéolite caractérisée par un rapport molaire SiO2/Al2O3 d'au moins 15; ii)a) du cobalt, b) un métal de type terre rare, c) de l'argent, du nickel et (ou) du zinc, ou du platine et (ou) du manganèse, ou du cuivre et (ou) du rhodium, qui y sont incorporés.

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